How to use an ASP.NET Core environment variable in testing with Visual Studio

Question

In my integration tests, I want to set a specific connection string when the test runs in a development environment, and another connection string when the test runs in the staging environment.

When I am not in testing mode, I simply set the environment variable on the machine, and all work OK. But on testing I can use UseEnvironment(envX), but then it'll be envX on all machines, or not use this method, and get the default one (which is production).

So, how can I use multiple connection strings, environment based, in my integration tests?

Set · Accepted Answer · 2016-12-18 21:16:20Z

4

If you use IHostingEnvironment to check the environment in integration test code, then you may override value in IHostingEnvironment.EnvironmentName:

//IHostingEnvironment env;

env.EnvironmentName = 'Development';
env.IsDevelopment() // return true;

env.EnvironmentName = 'TEST';
env.IsDevelopment() // return false;
env.IsEnvironment('TEST') // return true;

answered Dec 18, 2016 at 21:16

Set

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1 Comment

arielorvits Over a year ago

how this help me when running the same test on multiple envs? the same test should run sometimes on envX and sometimes on envY

henningst · Accepted Answer · 2016-12-18 19:18:43Z

2

Instead of using UseEnvironment(envX) you could set the environment variable ASPNETCORE_ENVIRONMENT before running the tests.

I.e. SET ASPNETCORE_ENVIRONMENT=Test and SET ASPNETCORE_ENVIRONMENT=SomeOtherEnvironment

answered Dec 18, 2016 at 19:18

henningst

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2 Comments

arielorvits Over a year ago

where I set the environment variable when I'm running unit test in Visual studio? I run this command on cmd, but then when debugging test I can see that env.name is still production

henningst Over a year ago

I don't think you can currently do this if you are just running it in Visual Studio. If you are running from the console or write a small script, you can first set the environment variable and then run dotnet test.

Peter Mortensen · Accepted Answer · 2020-02-28 17:00:34Z

0

If you are running dotnet test, you can set the environment variable in your PowerShell window locally first:

 $env:ASPNETCORE_ENVIRONMENT="test"
 dotnet test

edited Feb 28, 2020 at 17:00

Peter Mortensen

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answered Feb 14, 2018 at 15:55

Ricky Keane

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